i Register
In some senses, examinant is marked as obsolete. Watch for register when choosing this word.
noun
One who examines; an examiner.
“No matter, I want to hear you describe it, ” said the examinant.
One who is to be examined.
February 5 1722, Humphrey Prideaux, Articles for the Reformation of the two Universities the Examinants appear before them, in classes of ix at a time, and each class shall be examined […]